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                        <h1 id="mongodb-dbs">MongoDB DBS</h1>
<hr>
<ul>
<li><h2 id="mongodb-&#x521B;&#x5EFA;&#x6570;&#x636E;&#x5E93;">MongoDB &#x521B;&#x5EFA;&#x6570;&#x636E;&#x5E93;</h2>
<ul>
<li><h3 id="&#x8BED;&#x6CD5;">&#x8BED;&#x6CD5;</h3>
<pre><code class="lang-sql">  MongoDB &#x521B;&#x5EFA;&#x6570;&#x636E;&#x5E93;&#x7684;&#x8BED;&#x6CD5;&#x683C;&#x5F0F;&#x5982;&#x4E0B;&#xFF1A;

  <span class="hljs-operator"><span class="hljs-keyword">use</span> DATABASE_NAME
</span></code></pre>
<p>  &#x5982;&#x679C;&#x6570;&#x636E;&#x5E93;&#x4E0D;&#x5B58;&#x5728;&#xFF0C;&#x5219;&#x521B;&#x5EFA;&#x6570;&#x636E;&#x5E93;&#xFF0C;&#x5426;&#x5219;&#x5207;&#x6362;&#x5230;&#x6307;&#x5B9A;&#x6570;&#x636E;&#x5E93;&#x3002;</p>
</li>
<li><h3 id="&#x5B9E;&#x4F8B;">&#x5B9E;&#x4F8B;</h3>
<pre><code class="lang-sql">  &#x4EE5;&#x4E0B;&#x5B9E;&#x4F8B;&#x6211;&#x4EEC;&#x521B;&#x5EFA;&#x4E86;&#x6570;&#x636E;&#x5E93; runoob:

  &gt; use runoob
  switched to db runoob
  &gt; db
  runoob
  &gt;
</code></pre>
<p>  &#x5982;&#x679C;&#x4F60;&#x60F3;&#x67E5;&#x770B;&#x6240;&#x6709;&#x6570;&#x636E;&#x5E93;&#xFF0C;&#x53EF;&#x4EE5;&#x4F7F;&#x7528;show dbs&#x547D;&#x4EE4;&#xFF1A;</p>
<pre><code class="lang-sql">  &gt; show dbs
  local  0.078GB
  test   0.078GB
  &gt;
</code></pre>
<p>  &#x53EF;&#x4EE5;&#x770B;&#x5230;&#xFF0C;&#x6211;&#x4EEC;&#x521A;&#x521B;&#x5EFA;&#x7684;&#x6570;&#x636E;&#x5E93; runoob &#x5E76;&#x4E0D;&#x5728;&#x6570;&#x636E;&#x5E93;&#x7684;&#x5217;&#x8868;&#x4E2D;&#xFF0C; &#x8981;&#x663E;&#x793A;&#x5B83;&#xFF0C;&#x6211;&#x4EEC;&#x9700;&#x8981;&#x5411; runoob &#x6570;&#x636E;&#x5E93;&#x63D2;&#x5165;&#x4E00;&#x4E9B;&#x6570;&#x636E;&#x3002;</p>
<pre><code class="lang-sql">  &gt; db.runoob.insert({&quot;name&quot;:&quot;&#x83DC;&#x9E1F;&#x6559;&#x7A0B;&quot;})
  WriteResult({ &quot;nInserted&quot; : 1 })
  &gt; show dbs
  local   0.078GB
  runoob  0.078GB
  test    0.078GB
  &gt;
</code></pre>
<p>  MongoDB &#x4E2D;&#x9ED8;&#x8BA4;&#x7684;&#x6570;&#x636E;&#x5E93;&#x4E3A; test&#xFF0C;&#x5982;&#x679C;&#x4F60;&#x6CA1;&#x6709;&#x521B;&#x5EFA;&#x65B0;&#x7684;&#x6570;&#x636E;&#x5E93;&#xFF0C;&#x96C6;&#x5408;&#x5C06;&#x5B58;&#x653E;&#x5728; test &#x6570;&#x636E;&#x5E93;&#x4E2D;&#x3002;</p>
</li>
</ul>
</li>
</ul>
<ul>
<li><h2 id="mongodb-&#x5220;&#x9664;&#x6570;&#x636E;&#x5E93;">MongoDB &#x5220;&#x9664;&#x6570;&#x636E;&#x5E93;</h2>
<ul>
<li><h3 id="&#x8BED;&#x6CD5;">&#x8BED;&#x6CD5;</h3>
<pre><code class="lang-sql">  MongoDB &#x5220;&#x9664;&#x6570;&#x636E;&#x5E93;&#x7684;&#x8BED;&#x6CD5;&#x683C;&#x5F0F;&#x5982;&#x4E0B;&#xFF1A;

  db.dropDatabase()
</code></pre>
<p>  &#x5220;&#x9664;&#x5F53;&#x524D;&#x6570;&#x636E;&#x5E93;&#xFF0C;&#x9ED8;&#x8BA4;&#x4E3A; test&#xFF0C;&#x4F60;&#x53EF;&#x4EE5;&#x4F7F;&#x7528; db &#x547D;&#x4EE4;&#x67E5;&#x770B;&#x5F53;&#x524D;&#x6570;&#x636E;&#x5E93;&#x540D;&#x3002;</p>
</li>
<li><h3 id="&#x5B9E;&#x4F8B;">&#x5B9E;&#x4F8B;</h3>
<p>  &#x4EE5;&#x4E0B;&#x5B9E;&#x4F8B;&#x6211;&#x4EEC;&#x5220;&#x9664;&#x4E86;&#x6570;&#x636E;&#x5E93; runoob&#x3002;</p>
<p>  &#x9996;&#x5148;&#xFF0C;&#x67E5;&#x770B;&#x6240;&#x6709;&#x6570;&#x636E;&#x5E93;&#xFF1A;</p>
<pre><code class="lang-sql">  &gt;show dbs
  local   0.078GB
  runoob  0.078GB
  test    0.078GB
</code></pre>
<p>  &#x63A5;&#x4E0B;&#x6765;&#x6211;&#x4EEC;&#x5207;&#x6362;&#x5230;&#x6570;&#x636E;&#x5E93; runoob&#xFF1A;</p>
<pre><code class="lang-sql">  &gt;use runoob
  switched to db runoob

  &gt;
</code></pre>
<p>  &#x6267;&#x884C;&#x5220;&#x9664;&#x547D;&#x4EE4;&#xFF1A;</p>
<pre><code class="lang-sql">  &gt;db.dropDatabase()
  { &quot;dropped&quot; : &quot;runoob&quot;, &quot;ok&quot; : 1 }
</code></pre>
<p>  &#x6700;&#x540E;&#xFF0C;&#x6211;&#x4EEC;&#x518D;&#x901A;&#x8FC7; show dbs &#x547D;&#x4EE4;&#x6570;&#x636E;&#x5E93;&#x662F;&#x5426;&#x5220;&#x9664;&#x6210;&#x529F;&#xFF1A;</p>
<pre><code class="lang-sql">  &gt;show dbs
  local  0.078GB
  test   0.078GB

  &gt;
</code></pre>
</li>
<li><h3 id="&#x5220;&#x9664;&#x96C6;&#x5408;">&#x5220;&#x9664;&#x96C6;&#x5408;</h3>
<pre><code class="lang-sql">  &#x96C6;&#x5408;&#x5220;&#x9664;&#x8BED;&#x6CD5;&#x683C;&#x5F0F;&#x5982;&#x4E0B;&#xFF1A;

  db.collection.drop()
</code></pre>
<p>  &#x4EE5;&#x4E0B;&#x5B9E;&#x4F8B;&#x5220;&#x9664;&#x4E86; runoob &#x6570;&#x636E;&#x5E93;&#x4E2D;&#x7684;&#x96C6;&#x5408; site&#xFF1A;</p>
<pre><code class="lang-sql">  &gt;use runoob
  switched to db runoob

  &gt;show tables
  site

  &gt;db.site.drop()
  true

  &gt;show tables

  &gt;
</code></pre>
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